universal mixture. Before the cosmos was formed, Anaxagoras says, there was nothing but Mind and another infinite substance in which all other things were mixed together (§467). However, there were, in amongst this mixture, what he calls “seeds” (§468). These seeds were the beginnings of later, distinctive substances like, for example, air or water. Only Mind stands outside this mixture. It must be over and above the things it is going to control, so it alone is, as he says, “unmixed” (§476). Furthermore,
